/Engine/Plugins/Experimental/GeometryScripting/Source/GeometryScriptingCore/Public/GeometryScript/MeshModelingFunctions.h
Create a thickened shell from TargetMesh by offsetting the vertex positions along averaged vertex normals, inwards or outwards. Similar to ApplyMeshOffset but also includes the initial mesh (possibly flipped, if the offset is positive)
static [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * ApplyMeshShell ( [UDynamicMesh](API\Runtime\GeometryFramework\UDynamicMesh) * TargetMesh, [FGeometryScriptMeshOffsetOptions](API\Plugins\GeometryScriptingCore\GeometryScript\FGeometryScriptMeshOffsetOptions) Options, [UGeometryScriptDebug](API\Plugins\GeometryScriptingCore\GeometryScript\UGeometryScriptDebug) * Debug )